a skill apparent when he joined the lapd on february 7, 2005 the man who gave cnn this video did not want to be identified but talked so you could see what the lapd was up against. >> you look at chris, you could see he's a little bit of an expert. the way he disarms and shoots. almost no movement when he shoots the gun and then pump like nothing. >> he stood out? >> yeah, he stood out. he knew what he was doing. >> being a cop, could you tell that it was important to him? >> yeah, i think it was very important to him. >> you could see it? >> yeah. >> even during the training? >> yeah. >> i think it's a 300-pound dum dummy, and he does that easily. >> so this is a very strong man? >> right. >> not everything was easy for the aspiring police officer. drill instructors picked on him for his weight and slow running. >> he was always struggling, but -- i thought, maybe because he's a big guy they're picking on him. a couple times he would respond sort of aggressively. you know, he would yell back a little louder than anybody else would. he would be like yes, drill instructor. or like oka